An electrical generating system consists of a fuel cell, and an oxygen gas delivery.
The fuel cell includes and anode channel having an anode gas inlet for receiving
a supply of hydrogen gas, a cathode channel having a cathode gas inlet and a cathode
gas outlet, and an electrolyte in communication with the anode and cathode channel
for facilitating ion exchange between the anode and cathode channel. The oxygen
gas delivery system is coupled to the cathode gas inlet and delivers oxygen gas
to the cathode channel. The electrical current generating system also includes
gas recirculation means couple to the cathode gas outlet for recirculating a portion
of cathode exhaust gas exhausted from the cathode gas outlet to the cathode gas inlet.
